With the 134 Piece Mechanics Tool Set, you can be sure you have the right tool for the job. The tool sets for mechanics include two Pear Head ratchets and a variety of sockets, extensions, universal joints and adapters. The sockets include DirectTorque technology to help prevent rounding of fasteners and to provide better grip for the user. 3/8" and 1/2" drives included. Knurled Control Ring for extra grip.